2006 Ford Mustang Gt Coupe 2-door 4.6l on 2040-cars

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Lincoln recycling tree fibers into new MKX armrest

Want to hug a tree, or at least a really small part of one. Then set your arm down on one of those armrests in the 2014 Lincoln MKX crossover. The US automaker is working with Weyerhaeuser and Johnson Controls on a tree-based, cellulose-reinforced polypropylene material used in the component that connects the armrest to the floor console, Wards Auto says. With properties similar to plastic, the tree-based material replaces fiberglass and is about six percent lighter. No big deal for now, but if the material starts getting used for things like battery trays and interior storage covers, that loss in weight may eventually start adding up enough to boost fuel economy a bit, providing a green double bonus. Lincoln parent Ford, which isn't saying how much more (or less?) it costs to use the new material, established its Biomaterials and Plastics Research team in 2001. In 2007, the company began using soy-based foam in car seats used for models such as the Lincoln Navigator and Ford Mustang and has since broadened biomaterials use to components like floormats and cupholder inserts. Ford also used recycled plastic bottles from the 2012 North America International Auto Show for seats in the Focus Electric.

Top horsepower-per-dollar cars in 2017

Bang for the buck. That quasi-scientific statistic is bandied about by motor heads everywhere from classrooms to barrooms, though the truth of the matter is that it's exceedingly complex to measure. A fair performance-per-dollar index would include something like cross-referencing MSRP (Manufacturers Suggested Retail Price) with point-to-point times on a track or driving route, which is obviously hard to do comprehensively. But, for the sheer joy of talking about cars and playing with a big spreadsheet, there's always the horsepower-per-dollar index, which is more straightforward, albeit hilariously flawed. There are vagaries even with this simple formula, of course: MSRP for vehicles can change at a moment's notice, to say nothing of the bottom-line shifting that happens with local deals or showroom negotiation. For this list we're running with the straight MSRP wherever possible, and as recently reported as we can get it. All the vehicles on this list are 2017 models, and all trims are reported where the lowest price and differing power levels intersect. Some choices were made for personal preference and some for sanity, avoiding things like all 48 trim levels of the Ford Transit, all with the same horsepower). If this list were a simple top ten, or even a top fifty, you'd be bored to tears with all the red, white and blue that is represented. Following perfectly with conventional wisdom, American cars really do lead the world where hp/$ is concerned. So, for the sake of variety (and the sheer joy of seeing a minivan 'win' one round of this thing) I've sorted out some top five and bottom five lists for broad power categories. Let's dive in. Less Than 100 Horsepower Okay, okay, this is hardly a category we'll grant you. But we've often tried to click off all the sub-100-hp cars on sale in the US, and making this list gave us an excuse. It also illustrates that none of these smallish vehicles bring cheap horsepower to the table - for that you'll need a motorcycle. The segment-leading Chevy Spark (above) asks just over $139 for each hp, and that Smart Fortwo Electric Drive has hp on sale for about the same price as its very distant family cousin, the Mercedes-Benz SL65 AMG (insert your favorite Smart joke here... we know you want to).

Is that the Ford GT Le Mans racer in the background of this Forza video?

Shortly after the reveal of the new Ford GT in Detroit a couple of weeks ago, Microsoft announced that it was putting the new American supercar on the cover of the upcoming sixth installment of the Forza Motorsport video game series. Now it has put out a video of the process of digitizing Dearborn's latest. Whether you're into Detroit steel (or carbon fiber and aluminum in this case), exotic supercars or video games, the video is worth a watch in and of itself. But our eyes were focused on something else. In the background of one shot (around the 1:49 mark) you can see a design board with renderings of what looks to be the rumored racing version of the GT – complete with reshaped air intakes, deeper side sills, a bigger rear wing and a central rear fin like you'd find on the latest LMP1 racing prototypes. It wouldn't be the first time we've caught wind of the prospect of the Blue Oval's new supercar going racing. We first heard of the plans last October, further reinforced in December with reports of the new GT coming to Detroit. And as we reported just a couple of weeks ago following the supercar's reveal, a return to Le Mans could be in the cards – which would be fortuitous timing, since next year will mark the 50th anniversary of the original GT40 scoring its landmark 1-2-3 finish in the 24-hour race.